Caterpillar 12 circle part question

Sorry, I don't have parts books for those graders but I thought all the "length" was just square shafting. Maybe you are missing some yokes as well? I think it is very likely the yokes would interchange.

Hi, D2cody.
Like CCJersey, I don't have the parts books for either machine. How-wevver, I think it would be a fairly safe bet that the relevant shafts would not interchange 'cos the 212 is a rather smaller machine than the 12. It is more likely that the shaft from a 112 would fit as the 112 was basically a 4-cylinder version of the 12.

If my memory serves me 'key-wrecked-ly', that shaft is a solid round bar with 2 tags set at 180 degrees from each other on each end - shouldn't be hard to make a replacement if you have some good round bar stock and a welder handy. As CCJersey mentioned, there are yokes on the gearboxes at each end which fit over the shaft and engage the tags. Make sure they are still present 'cos I suspect that at least one of them would hafta come loose to allow the shaft to fall out.

Just my 0.02..

Thanks for the info boys. I believe you are correct about the sizes being different so they won't probably interchange. The 2 yokes are both still in place so I am guessing a snap ring or pin must have fallen out or something allowing it to fall so I will probably will weld a new piece up if I can't find the old one with the metal detector. Also I think I am going to make some sort of bolt on expanded steel basket underneath of it I can bolt on or something in case it ever happens again it will catch it plus it would make a nice place to keep oil and a small tool box possibly. Thanks again for all the help.